Court documents filed in Dallas this week show that Armstrong has asked a judge to stop an arbitration panel from considering whether Dallas-based SCA Promotions should be able to recover its money.
The company tried proving Armstrong used steroids and other drugs and doping methods back in 2005, but ultimately agreed to pay him in a 2006 settlement.
In a motion filed Monday, Armstrong's attorneys say there's "no authority under Texas law" for arbitration. They've asked a judge for a hearing.
Armstrong was stripped of his seven Tour de France victories and given a lifetime ban from sports in 2012.